Completing its "Daubert Trilogy," the Court held that the "Gatekeeping" role of federal trial judges, explicated in Daubert, applies to technical evidence that is not in the realm of "pure science." Atlantic Legal's brief was cited in the Court's decision. Atlantic Legal's clients included several prominent engineers, including a foremost expert on tire failure and non-destructive testing of tires (whose monograph was also cited by the Court), as well as former presidents of the American Society of Mechanical Engineers.